NDLI: Radioactive nuclides as tracers of environmental processes

Content Provider	Springer Nature Link
Author	Papastefau, C. Papastefau, C.
Copyright Year	2006
Abstract	Relatively short-lived radioactive nuclides of cosmogenic origin, such as$^{7}$Be (T$_{1/2}$=53.3 d),$^{32}$P (14.3 d),$^{33}$P (25.3 d),$^{35}$S (87.4 d) as well as$^{22}$Na (2.6 y) have come to be recognized as potential tools to trace environmental processes, such as precipitation, washout (precipitation scavenging), resuspension, atmospheric particle deposition and deposition patterns of airborne contaminants, aerosol deposition and aerosol trapping by above ground vegetation (air-to-vegetation transfer). Of the above radionuclides,$^{7}$Be as well as$^{210}$Pb of terrestrial origin and$^{137}$Cs, a fission product radionuclide, are commonly used for determining the atmospheric particle deposition parameters. It was found that the deposition velocity of$^{7}$Be-associated aerosol particles varied from 0.3 to 0.8 cm$^{.}$ s$^{-1}$(average 0.5 cm$^{.}$ s$^{-1}$), the washout ratio for$^{7}$Be varied from 103 to 375 (average 144), the resuspension factor for the$^{7}$Be-associated particles varied from 1.6$^{.}$ 10$^{-4}$to 4.2$^{.}$ 10$^{-4}$m$^{-1}$(average 2.3$^{.}$ 10$^{-4}$m$^{-1}$) and the air-to-vegetation transfer rate for$^{7}$Be varied from 5258 to 16180 m$^{3}$$^{.}$kg$^{-1}$(average 9856 m$^{3}$$^{.}$kg$^{-1}$) for grass, gramineae or poaceae the species. For the$^{137}$Cs-associated aerosol particles the deposition velocity varied from 1.3 to 6.3 cm$^{.}$ s$^{-1}$(average 3.4 cm$^{.}$ s$^{-1}$), the washout ratio for$^{137}$Cs varied from 284 to 3810 (average 1295), the resuspension factor for the$^{137}$Cs-associated aerosol particles varied from 0.1$^{.}$ 10$^{-4}$to 1.2$^{.}$ 10$^{-4}$m$^{-1}$(average 0.6$^{.}$ 10$^{-4}$m$^{-1}$) and the air-to-vegetation transfer rate for$^{137}$Cs varied from 39638 to 345279 m$^{3}$$^{.}$kg$^{-1}$(average 181197 m$^{3}$$^{.}$kg$^{-1}$) for grass, gramineae or poaceaethe species.
Starting Page	315
Ending Page	320
Page Count	6
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	267
Issue Number	2
e-ISSN	15882780
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inorganic Chemistry Physical Chemistry Diagnostic Radiology Nuclear Physics, Heavy Ions, Hadrons Nuclear Chemistry
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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